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Table 3 ECV and native T1 results

From: Increased left ventricular myocardial extracellular volume is associated with longer cardiopulmonary bypass times, biventricular enlargement and reduced exercise tolerance in children after repair of Tetralogy of Fallot

   Patients n Controls n p
Native T1 (ms)
 Entire left ventricle mid 974 ± 37 29 986 ± 29 15 0.26
  base 982 ± 37 31 998 ± 25 15 0.10
 Interventricular septum mid 990 ± 49 31 1000 ± 39 15 0.44
  base 989 ± 43 31 999 ± 28 15 0.34
 Left ventricular free wall mid 970 ± 50 31 989 ± 46 15 0.20
  base 963 ± 52 30 983 ± 30 15 0.11
Extracellular volume (%)
 Entire left ventricle mid 23.6 ± 3.3 28 23.4 ± 3.0 14 0.84
  base 24.0 ± 3.2 28 22.9 ± 2.6 13 0.25
 Interventricular septum mid 24.3 ± 3.7 30 22.8 ± 2.7 14 0.13
  base 23.7 ± 3.3 29 23.1 ± 2.8 13 0.57
 Left ventricular free wall mid 22.3 ± 3.8 30 23.1 ± 2.7 14 0.43
  base 22.3 ± 3.9 27 21.5 ± 2.4 13 0.45
  1. Data are given as mean ± standard deviation. The varying numbers n of available values for the different measurements is attributed to image quality, i.e., image quality of some native or post contrast T1 maps was reduced in parts